Machine for mixing flour



(No Model.)

- J. DAWSON.

MACHINE FOR MIXING FLOUR. No. 310,126. Patented Dec. 30, 1884.

WITNESSES: J INVBNTOR.

W ATTORNEYS.

Uturnn rates Parana" @rrica,

JAMES DAW SON, OF VILMINGTON, DELAWARE.

WlACt-HNE Foa MlXlNG FLOUR.

EEEELCIPICATION forming part of Letters Patent No. 310,126, datedDecember 30, 1884.

Application filed August 11, 1884. (No model.)

T 0 all whomit may concern.-

Be it known that I, J AMES DiiwsoN, a citizen of the United States, anda resident of\Vilmington, in the county of New Castle and State ofDelaware, have invented certain new and useful Improvements in M achincsfor Mixing Flour; and Ido hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, which form apart ofthis specification, and in which Figure 1 is aside view of myimprovedflourmixer, and Fig. 2 is a vertical section of the same.

Similar letters of reference indicate corresponding parts in boththefigures.

My invention has relation to machines for mixing flour and the sweepingsor leavings in the different portions of the machinery in aiiour-milLfor the purpose of feeding them back to the bolting-reelsagain; and it consists in the improved construction and combination ofparts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates an inverted conicalchamber, which is placed upon the top of a flat conical chamber, B,which is mounted upon suitable supports, G, and a shaft, D, is journaledvertically in the chambers, axial to them, in bearings in the bottom ofthe flat conical chamber, and in hearings in a spider, E, at the wideopen top of the upper inverted conical chamher. This shaft receives arotary motion by any suitable gearing or connection, a cogwheel, F,being shown in the drawings attached to the lower end of the shaft,which cogwheel engages a pinion, G, upon the driveshaft H, and theportion of the shaft within the inverted conical chamber is providedwith a number of radial arms, I, which are eonnected at their ends withdownwardly-inclined rods J, which are parallel with the walls of thechamber, and which revolve very close to the same. A cone, K, revolveswith and slides upon the shaft at the junction of the inverted conicalchamber and of the flat conical chamber, and the upper portion of thecone is provided with a spiral flange, L, which is revolved within thelower end of the inverted conical chamber, while a corrugated portion,M, of the cone registers with a corrugated portion,

N, in the upper end of the flat conical cham- U ber, forming a grindingmechanism. The lower reduced portion, 0, of the cone has an annulargroove, 1?, into which the inner end ofa lever, Q, which is pivoted inthe side of the flat conical. chamber, projects; and the outer end ofthis lever is formed with .an eye, It, through which ascrew, S,projects, which screw is secured to the base of the machine, and two hand-wheels, T,having threaded central perfo rations, iit and turn upon thescrew-one above and one below the eyed end of the leverserving to adjustthe angle of the lever, and consequently the proximity of the corrugatedportion of the cone to the corrugated portion at the top of the flatconical chamber. A number of arms, U, project from the lower end of thevertical. shaftnear the bottom of the lower chamber, and these arms arepro vided with brushes Y, or similar sweepers or gatherers, which maysweep the mixed flour into the discharge-aperture V in the bottom of theconical chamber. The fiat conical chamher is provided with a-hand-hole,X, covered by means of a plate and yoke, Y, through which access may behad from the exterior of the chamber to the interior of the same.

It will be seen that all the flour and sweep ings and leav-ings from theseveral machines of a flour-mill may all be fed into the upper invertedconical hopper, where they are stirred and mixed by means of thestirrer-arms and the inclined rods, which travel around the sides of thechamber, whereupon the spiral flange upon the cone feeds the mixedmaterial tothe corrugated portions of the cone and of the top of theflat conical vessel, between which corrugated portions any lumps orcoarser particles are ground, whereupon the mixed article falls into theflat conical chamber, from which it is swept out by means ofthesweeping-armsinto the discharge-spout, which carries it to thebolting-reel, where it again may be subjected to the bolting process.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States The herein-described machine formixing llonr, comprising the inverted conical mixingehamber providedwith the spider formed with the central bearing at its upper end,thelower flat conical chamber formed with its inner sides corrugated atits top, and formed with a vertical bearing, and with an outlet-aperturein its bottom, a vertical shaft having means for revolving it, andjournaled axially within the conical chambers in the bearings, stirrerarms connected by means of inclined scraperrods, said arms projectingradially from the upper portion of the shaft, the grinding-cone formedwith the upper flanged portion, the corrugated middle portion, and thegrooved lower portion, as described, the lever formed with an eye at itsouter end and pivoted in the wall of the flat conical chamber, means,substantially as described, for adjusting the angle of the said lever,the sweeper-arms projecting radially from the lower portion of theshaft, and the sweepers secured to the said arms, as and for the purposeshown and set forth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

JAMES Dawson.

WVitnesses:

XVM. A. KIMMEY, AUGUST PETERSON.

